<!--
 * @Description: 我的购物车页面组件
 * @Author: hai-27
 * @Date: 2020-02-20 01:55:47
 * @LastEditors: hai-27
 * @LastEditTime: 2020-02-27 13:36:42
 -->

<template>
  <div class="shoppingCart">
    <!-- 购物车头部 -->
    <div class="cart-header">
      <div class="cart-header-content">
        <p>
          <i
            class="el-icon-shopping-cart-full"
            style="color: #ff6700; font-weight: 600"
          ></i>
          我的购物车
        </p>
        <span>温馨提示：产品是否购买成功，以最终下单为准哦，请尽快结算</span>
      </div>
    </div>
    <!-- 购物车头部END -->

    <!-- 购物车主要内容区 -->
    <div class="content" v-if="getShoppingCart.length > 0">
      <ul>
        <!-- 购物车表头 -->
        <li class="header">
          <div class="pro-check">
            <el-checkbox v-model="isAllSelected" @change="toggleAllSelected"
              >全选</el-checkbox
            >
          </div>
          <div class="pro-img"></div>
          <div class="pro-name">商品名称</div>
          <div class="pro-price">单价</div>
          <div class="pro-num">数量</div>
          <div class="pro-total">小计</div>
          <div class="pro-action">操作</div>
        </li>
        <!-- 购物车表头END -->

        <!-- 购物车列表 -->
        <li
          class="product-list"
          v-for="(item, index) in getShoppingCart"
          :key="item.id"
        >
          <div class="pro-check">
            <el-checkbox
              :value="isSelected(item.id)"
              @change="toggleSelected(item.id)"
            ></el-checkbox>
          </div>
          <div class="pro-img">
            <router-link
              :to="{
                path: '/goods/details',
                query: { productID: item.productId },
              }"
            >
              <img :src="item.productPic" />
            </router-link>
          </div>
          <div class="pro-name">
            <router-link
              :to="{
                path: '/goods/details',
                query: { productID: item.productId },
              }"
              >{{ item.productName }}</router-link
            >
          </div>
          <div class="pro-price">{{ item.price }}元</div>
          <div class="pro-num">
            <el-input-number
              size="small"
              :value="item.quantity"
              @change="handleChange($event, index, item.id)"
              :min="1"
              :max="100"
            ></el-input-number>
          </div>
          <div class="pro-total pro-total-in">
            {{ item.price * item.quantity }}元
          </div>
          <div class="pro-action">
            <el-popover placement="right">
              <p>确定删除吗？</p>
              <div style="text-align: right; margin: 10px 0 0">
                <el-button
                  type="primary"
                  size="mini"
                  @click="deleteItem($event, item.id)"
                  >确定</el-button
                >
              </div>
              <i
                class="el-icon-error"
                slot="reference"
                style="font-size: 18px"
              ></i>
            </el-popover>
          </div>
        </li>
        <!-- 购物车列表END -->
      </ul>
      <div style="height: 20px; background-color: #f5f5f5"></div>
      <!-- 购物车底部导航条 -->
      <div class="cart-bar">
        <div class="cart-bar-left">
          <span>
            <router-link to="/goods">继续购物</router-link>
          </span>
          <span class="sep">|</span>
          <span class="cart-total">
            共
            <span class="cart-total-num">{{ getNum }}</span> 件商品，已选择
            <span class="cart-total-num">{{ checkNum }}</span> 件
          </span>
        </div>
        <div class="cart-bar-right">
          <span>
            <span class="total-price-title">合计：</span>
            <span class="total-price">{{ totalPrice }}元</span>
          </span>
          <router-link :to="checkNum > 0 ? '/confirmOrder' : ''">
            <div
              :class="checkNum > 0 ? 'btn-primary' : 'btn-primary-disabled'"
              @click="handleClick()"
            >
              去结算
            </div>
          </router-link>
        </div>
      </div>
      <!-- 购物车底部导航条END -->
    </div>
    <!-- 购物车主要内容区END -->

    <!-- 购物车为空的时候显示的内容 -->
    <div v-else class="cart-empty">
      <div class="empty">
        <h2>您的购物车还是空的！</h2>
        <p>快去购物吧！</p>
      </div>
    </div>
    <!-- 购物车为空的时候显示的内容END -->
  </div>
</template>
<script>
import { mapActions } from "vuex";
import { mapGetters } from "vuex";
import userClient from "../util/request";
export default {
  data() {
    return {
      selectedItems: [],
      isAllSelected: false,
    };
  },
  methods: {
    ...mapActions(["updateShoppingCart", "deleteShoppingCart", "checkAll", "setCheckGoods"]),
    isSelected(index) {
      return this.selectedItems.includes(index);
    },
    toggleAllSelected() {
      if (this.isAllSelected) {
        // 全选
        this.selectedItems = this.getShoppingCart.map((item, index) => item.id);
      } else {
        // 取消全选
        this.selectedItems = [];
      }
    },
    updateAllSelected() {
      this.isAllSelected =
        this.selectedItems.length === this.getShoppingCart.length;
    },
    toggleSelected(index) {
      const i = this.selectedItems.indexOf(index);
      if (i === -1) {
        this.selectedItems.push(index);
      } else {
        this.selectedItems.splice(i, 1);
      }
      this.updateAllSelected();
    },
    // 修改商品数量的时候调用该函数
    handleChange(currentValue, key, id) {
      // // 当修改数量时，默认勾选
      this.updateShoppingCart({ key: key, prop: "check", val: true });

      let changenumapi =
        "userapi/cart/update/quantity?id=" + id + "&quantity=" + currentValue;

      // 向后端发起更新购物车的数据库信息请求
      userClient
        .get(changenumapi)
        .then((res) => {
          switch (res.data.code) {
            case 200:
              // “001”代表更新成功
              // 更新vuex状态
              this.updateShoppingCart({
                key: key,
                prop: "quantity",
                val: currentValue,
              });
              // 提示更新成功信息
              this.notifySucceed(res.data.message);
              break;
            default:
              // 提示更新失败信息
              this.notifyError(res.data.message);
          }
        })
        .catch((err) => {
          return Promise.reject(err);
        });
    },
    checkChange(val, key) {
      // 更新vuex中购物车商品是否勾选的状态
      this.updateShoppingCart({ key: key, prop: "check", val: val });
    },
    // 向后端发起删除购物车的数据库信息请求
    deleteItem(e, id) {
      let dltapi = "userapi/cart/delete?ids=" + id;
      userClient
        .post(dltapi)
        .then((res) => {
          switch (res.data.code) {
            case 200:
              // “001” 删除成功
              // 更新vuex状态
              this.deleteShoppingCart(id);
              // 提示删除成功信息
              this.notifySucceed(res.data.message);
              break;
            default:
              // 提示删除失败信息
              this.notifyError(res.data.message);
          }
        })
        .catch((err) => {
          return Promise.reject(err);
        });
    },

    handleClick() {

      let checkedGoods = []
      this.selectedItems.forEach((id) => {
        const item = this.getShoppingCart.find((item) => item.id === id);
        checkedGoods.push(item)
      });

      console.log("设置checkGoods")
      console.log(checkedGoods)
      this.setCheckGoods(checkedGoods)
    },
  },
  computed: {
    ...mapGetters(["getShoppingCart", "getCheckNum", "getNum"]),

    checkNum() {
      let total = 0;
      this.selectedItems.forEach((id) => {
        const item = this.getShoppingCart.find((item) => item.id === id);
        total += item.quantity;
      });

      return total;
    },
    totalPrice() {
      let total = 0;
      console.log(this.getShoppingCart);
      console.log(this.selectedItems);
      this.selectedItems.forEach((id) => {
        const item = this.getShoppingCart.find((item) => item.id === id);
        total += item.price * item.quantity;
      });

      return total;
    },
  },
};
</script>
<style scoped>
.shoppingCart {
  background-color: #f5f5f5;
  padding-bottom: 20px;
}
/* 购物车头部CSS */
.shoppingCart .cart-header {
  height: 64px;
  border-bottom: 2px solid #ff6700;
  background-color: #fff;
  margin-bottom: 20px;
}
.shoppingCart .cart-header .cart-header-content {
  width: 1225px;
  margin: 0 auto;
}
.shoppingCart .cart-header p {
  font-size: 28px;
  line-height: 58px;
  float: left;
  font-weight: normal;
  color: #424242;
}
.shoppingCart .cart-header span {
  color: #757575;
  font-size: 12px;
  float: left;
  height: 20px;
  line-height: 20px;
  margin-top: 30px;
  margin-left: 15px;
}
/* 购物车头部CSS END */

/* 购物车主要内容区CSS */
.shoppingCart .content {
  width: 1225px;
  margin: 0 auto;
  background-color: #fff;
}

.shoppingCart .content ul {
  background-color: #fff;
  color: #424242;
  line-height: 85px;
}
/* 购物车表头及CSS */
.shoppingCart .content ul .header {
  height: 85px;
  padding-right: 26px;
  color: #424242;
}
.shoppingCart .content ul .product-list {
  height: 85px;
  padding: 15px 26px 15px 0;
  border-top: 1px solid #e0e0e0;
}
.shoppingCart .content ul .pro-check {
  float: left;
  height: 85px;
  width: 110px;
}
.shoppingCart .content ul .pro-check .el-checkbox {
  font-size: 16px;
  margin-left: 24px;
}
.shoppingCart .content ul .pro-img {
  float: left;
  height: 85px;
  width: 120px;
}
.shoppingCart .content ul .pro-img img {
  height: 80px;
  width: 80px;
}
.shoppingCart .content ul .pro-name {
  float: left;
  width: 380px;
}
.shoppingCart .content ul .pro-name a {
  color: #424242;
}
.shoppingCart .content ul .pro-name a:hover {
  color: #ff6700;
}
.shoppingCart .content ul .pro-price {
  float: left;
  width: 140px;
  padding-right: 18px;
  text-align: center;
}
.shoppingCart .content ul .pro-num {
  float: left;
  width: 150px;
  text-align: center;
}
.shoppingCart .content ul .pro-total {
  float: left;
  width: 120px;
  padding-right: 81px;
  text-align: right;
}
.shoppingCart .content ul .pro-total-in {
  color: #ff6700;
}
.shoppingCart .content ul .pro-action {
  float: left;
  width: 80px;
  text-align: center;
}
.shoppingCart .content ul .pro-action i:hover {
  color: #ff6700;
}
/* 购物车表头及CSS END */

/* 购物车底部导航条CSS */
.shoppingCart .cart-bar {
  width: 1225px;
  height: 50px;
  line-height: 50px;
  background-color: #fff;
}
.shoppingCart .cart-bar .cart-bar-left {
  float: left;
}
.shoppingCart .cart-bar .cart-bar-left a {
  line-height: 50px;
  margin-left: 32px;
  color: #757575;
}
.shoppingCart .cart-bar .cart-bar-left a:hover {
  color: #ff6700;
}
.shoppingCart .cart-bar .cart-bar-left .sep {
  color: #eee;
  margin: 0 20px;
}
.shoppingCart .cart-bar .cart-bar-left .cart-total {
  color: #757575;
}
.shoppingCart .cart-bar .cart-bar-left .cart-total-num {
  color: #ff6700;
}
.shoppingCart .cart-bar .cart-bar-right {
  float: right;
}
.shoppingCart .cart-bar .cart-bar-right .total-price-title {
  color: #ff6700;
  font-size: 14px;
}
.shoppingCart .cart-bar .cart-bar-right .total-price {
  color: #ff6700;
  font-size: 30px;
}
.shoppingCart .cart-bar .cart-bar-right .btn-primary {
  float: right;
  width: 200px;
  text-align: center;
  font-size: 18px;
  margin-left: 50px;
  background: #ff6700;
  color: #fff;
}
.shoppingCart .cart-bar .cart-bar-right .btn-primary-disabled {
  float: right;
  width: 200px;
  text-align: center;
  font-size: 18px;
  margin-left: 50px;
  background: #e0e0e0;
  color: #b0b0b0;
}
.shoppingCart .cart-bar .cart-bar-right .btn-primary:hover {
  background-color: #f25807;
}
/* 购物车底部导航条CSS END */
/* 购物车主要内容区CSS END */

/* 购物车为空的时候显示的内容CSS */
.shoppingCart .cart-empty {
  width: 1225px;
  margin: 0 auto;
}
.shoppingCart .cart-empty .empty {
  height: 300px;
  padding: 0 0 130px 558px;
  margin: 65px 0 0;
  background: url(../assets/imgs/cart-empty.png) no-repeat 124px 0;
  color: #b0b0b0;
  overflow: hidden;
}
.shoppingCart .cart-empty .empty h2 {
  margin: 70px 0 15px;
  font-size: 36px;
}
.shoppingCart .cart-empty .empty p {
  margin: 0 0 20px;
  font-size: 20px;
}
/* 购物车为空的时候显示的内容CSS END */
</style>